Valve-grinder.



P. RECGONI.

VALVE GRINDER. APPLICATION FILED JAN.23.1911.

1,000,553. Patented Aug. 15, 14911.

man; a hmmag A Illllll` 5 JJIIIIIIIIH;

of the King of Italy,

UNITED srnrynsmrrnnr OFFICE.

PETER BECCONLOF SAN FRANCISCO, CALIFORNIA.

VALVE-GRINDER.

Specification of Letters Patent.

Application illed January 23, 1911.

To all whom it may concern:

Be it known that I, PETER RECCONI, subj eet residing in the city and county of San Francisco and State of California, have invented new and useful Improvements in Valve-Grinders, of which thefollowing is a specification.

This invention relates to valve grinders and particularly to grindino mechanism applicable tothe grinding ofj valves in position. A

The object of this invention is to provide a device for grinding valves on their seats which may be either manually or mechanic ally driven; which comprehends means whereby the actuating parts may be instantly disconnected from the driving shaft when.' the latter is motor driven; which provides means for varying the degree of oscillation ofthe valve engaging member; and which is simple, substantial and effective.

An important object of the invention is to so 'design the valve moving members that they will automatically unlock themselves when pressure is relieved on the device, to permit a manual readjustment of the valve during its grinding.

The inventionv consists of the parts and the combination and construction of parts as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which# Figure 1 is a front elevation of the tool. Fig. 2 is a side elevation in partial section.

In the present form of my invention 2 represents a valve engaging member or bit removably secured in a -chuck member 3 which is chambered at its upper portion 4t to receive a spring 5, reactive upon a stem (3 which is formed uponthe lower end of an actuating screw or spiral shaft 7.

To the chuck member 4. is secured an upwardly extending collar S inwardly tlanged to embrace a clutch jaw l) havingl snit-able teeth adapted to be depressed into engage^ `ment with complementary teeth 10 formed upon the chuck member Il, Normally the chuck 3 is projected downwardly or away from the clutch jaw 9 by the spring 5.

`Whcn the blt 2 is placed into operative engagement with the valve or other body to be moved and presser-eis applied through the spiral shaft 7, the jaw member 9 moves into engagement with the complementary clutch teeth 10 to the clutch section 4 and Patented Aug. 15, 1911.

seran No. 604,107.

when the spiral shaft 7 is oscillated a similar motion is transmitted to the bit 2.

t For the purpose of actuating or oscillatin g the spiral shaft 7, I have provided a shdable sleeve 11 internally formed to embrace the shaft 7 and which is adapted to be reciprocated by a 1in-k memberA 12 con' nected at 13 to the sleeve 11, and which has formed upon itsupper end a crossheadV 14 having a transverse slot 15,.

The hnk 12 and the screw embracing sleeve 11 are guided in an appropriate4 frame 1G. upon which is journaled a shaft 17 carrying a momentum ,wheel 18, provided with a radial slot 19 in which is adjustable a polygonal nut 20. Projecting outwardly from the momentum wheel 1S and threaded in the adjustable nut 2O is a crank member 21 upon which is mounted an antifriction device 22, in thelform o f a roller which travels in the transverse slot 15 ofthe link erosshead 14. 'llIotion may be transmitted to the wheel carrying shaft 17 by any appropriate means, as a crank, not shown, which may beseeured upon the polygonall end of the shaft, or by means of a 'train of gears, represented at 23 and 24, the latter of which is shiftable upon an intermediate shaft 25 on which 4is fixed an intermediate gear 26. Meshing with this intermediate gear 26is a pinion 27 loosely mounted upon a driving shaft 28 and which pinion is driven by means of a clutch 29 adapted to be shifted into oooperative engagement with the driving pinion 27. l

An important and distinctive feature of the. present invention is in the provision of-` means whereby the transmission of power from the driving shaft 28 to the wheel 17 may be instantly interrupted during the operation of the valve grinder and this means in the present instance comprises a bell crank l() pivoted at 31, to one arm of which is pivot ed at 52 a link 33 Which is desires to shift the eluteh Q'eut of euguge-- nient with itzy eeniplei'nentnry driving geur 27. This is an in'iliortunt provision for itallows the operator to lun'e t'lie free use ol one hand abouty the imicliiiie or pui'ts being Iliwing thus` deecril'ied my invention what I claim and (lenire to secure by Letters lutent 'isy 1. A valw e grinder eoi'nl'irieing u. vulre en.- g'aging tool, e spirul shaft, un ,:iutoiuut'ic elutffli inount'ed upon Suid shaft, un iietuu-'tor ei'nbracin'g':r the Shaft, :ind'n'icuns t'oi' 'operuting the actuator, said ineens ineli'idi`n j :i iota-table member having an ndjusituble crunk.

2. A valve grindereompi'ising n \'.il\'e engn'ging tool, a spiral sluit'tz, un automatic clutch mounted upon Suid faliuft, :in actuator embracing the shnft,fnie:'\ns for operating.; the sieti'nitor, said means" including un udjuistuble crank, :t nioin'entuin wheel on wlirrh said crunk is'niounted and transmission devices lfor opere ting- -suid wheel.

3. A vulve grinder eenil'ii'ising it valve engauging tool, :i spiral shaft., :in uutonnitie elutel'i mounted upon said shaft, an 'actuator embracing the bhuft, inea-iis 'for Operating; the actuator, said means including -iin iid.- justa'ble crank, si. momentum wheel on whieli said crunk is mounted and trainuniission devices for-opemttiilg Suid; wheel, seid devices oscillating said shaft,A driving' i'neelninis'ni connected to unid"instrumentolit ies, a' freine upon which sind instruiuentulities'und Suid driving ineehnnieu'is nre mounted, -fincbnf bundle secured to 5u id frame whereby' the vulve grii'idei' muy be controlled,

A vvulve grinder comprising n t'tli'e' uitging tool, u, spiral slnil'it, 'iit'i"'ui i`t'on4 cluteli connecting seid sliuft .find-'hnl insti'unientulit'ies for i-Jscillut'lnig :luid

diiringiuecllunisin. connected to uuid inet v iuentulitieu, u frninefupon which siii-d 'inst-tuns ii'te n'u-ntulites und Suid. d ri vinti int-.chui mounted, :i luindle'sei'ured to said liiin whereby the vulve lgrinder muy ljefoor trolled, u nornmlly closed clutc-li inoui'ited uieeliunisni: und :L device inoulxt dinrjfuxt:l position to sind lm ndle whereby tlieoper: tor nniy disonguge sind elufel|. In testimony wlici'eol l lnive li'ci'eunttiv inyr hund iii the presence 'oit tu-'onsuluuci'ib witnesses. y vPETER CECC/01X Witnesses:

V. R. L\S{i.tenis'r'io,

JAS. l. KANE. 

